Modal Damping Coefficient Estimation of Carbon-Fiber-Reinforced Plastic Material Considering Temperature Condition

Excellent mechanical properties of carbon-fiber-reinforced plastic material (CFRP) demonstrates many possibilities in industries using lightweight materials, but unlike isotropic materials, such as iron, aluminum, and magnesium, they show direction-sensitive properties, which makes it difficult to a...

Full description

Saved in:
Bibliographic Details
Published inMaterials Vol. 13; no. 12; p. 2872
Main Authors Kang, Ho-Young, Kim, Chan-Jung, Lee, Jaewoong
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 26.06.2020
MDPI
Subjects
Aluminum
Boundary conditions
Carbon fiber reinforced plastics
Carbon fibers
carbon-fiber-reinforced plastic material
Coefficients
Composite materials
direction of carbon fiber
Frequency response functions
Isotropic material
Magnesium
Mathematical analysis
Mechanical properties
Modal damping
modal damping coefficient
Product development
resonance frequency
Steel products
Systems stability
temperature condition
Temperature effects
Vibration tests
Online AccessGet full text

Cover

More Information
Summary:Excellent mechanical properties of carbon-fiber-reinforced plastic material (CFRP) demonstrates many possibilities in industries using lightweight materials, but unlike isotropic materials, such as iron, aluminum, and magnesium, they show direction-sensitive properties, which makes it difficult to apply for them. The sensitivity of a modal damping coefficient of a CFRP material over the direction of carbon fiber was examined on spectral input patterns in recent research, but the effect of temperature was not considered up to now. To overcome this, uniaxial vibration tests were conducted using five simple specimens with different direction of carbon fiber in a CFRP specimen, the frequency response functions were experimentally determined and the modal damping coefficients were calculated. It was revealed that the resonance point and the modal damping of the specimen changed according to the change in temperature condition. Based on the experimental results, it was demonstrated that the theoretical frequency response function of the carbon composite material is a function of temperature, and it was confirmed that the nonlinear characteristic of the modal damping was the smallest under the 0 degree of direction of carbon fiber.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1996-1944
1996-1944
DOI:10.3390/ma13122872